/Engine/Source/Runtime/Slate/Public/Framework/Docking/TabManager.h
Finds the last major or nomad tab in a particular window.
[TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SDockTab](API\Runtime\Slate\Widgets\Docking\SDockTab) > FindLastTabInWindow ( [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [SWindow](API\Runtime\SlateCore\Widgets\SWindow) > Window ) const